Paper-bag machine



(No Model.)

W. G. GROSS. Paper Bag Machine.

No. 232,946. Patented Oct. 5,1880.

Uwrrien Smarts PATENT arrest WILLIAM G. CROSS, OF BOSTON, MASSACHUSETTS.

PAPER BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 232,946, dated October 5, 1880. Application filed August 30, '1880. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM 6. Guess, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Machinery for Makin g Satchel-Bottom Paper Bags, of which the following is a specification.

My invention has relation to an improved arrangement (intended primarily for use in a machine for making satchel-bottom paper bags organized and operatin gsubstantially as shown and described in Margaret E. Knights patent, No. 116,842, dated July 11, 1871, and reissued May 18, 1880, No. 9,202,) of a pastor for pasting the third or final fold and a folder for making said fold, the advantage of the arrangement being that, in a simple and entirely eifective way, I can thoroughly apply the paste-lines throughout the entire length of the final-fold flap, and even on both sides of the line of fold, if desired. The arrangement referred to, while designed with special reference to machinery of the kind above specified, may be used also in satchel-bottom-bag machinery in which the diamond and second folds are formed by instrumentalities other than those described in said Letters Patent.

The improvement will first be described by reference to the accompanying drawings, and will then be specifically pointed out in the claims.

In the drawings, Figure 1 is a plan, and Fig. 2 a longitudinal central section, of a machine embodying my invention.

Only so much of the machine is represented as is essential for the purpose of explanation, the gearing being omitted, so as to show the working parts of the machine more plainly. I have also omitted from the drawings the intermittently-moving feed-rolls, the severingknife, the reciprocating follower, and the trunk or former. These parts, which necessarily are used in connection with the portion of the machine represented in the drawings, may be constructed, combined, and arranged to operate in connection with the plate-knife folder, the guide-finger, and the side-folders, as shown and described in said Knight patent or in my Let ters Patent No. 215,578, dated May 20, 1879.

The table upon which the blank is fed forward and rests while the second fold is made is shown at A, the plate-knife folder at B, the hinged guide-finger at O, and the side-folders at D. These parts are constructed, combined, actuated, and arranged to operate together to make the diamond and second folds, substantially as described in Letters Patent No. 220,925, dated October 28,1879. They require, therefore, no further description here.

The second fold, formed by the conjoint action of the plateknife folder Band the sidefolders 1), may be pasted by means of any suitable pasting devicessuch, for instance, as shown and described in my Letters PatentNo. 221,035, dated October 28, 1879.

L are the delivery-rolls, which operate to carry along the blank at the proper time, as indicated in the patent last referred to.

The portions of the machine thus far described may be mounted on a longitudinally and intermittently reciprocating frame, as described in my Letters Patent No. 229,970, of July 1'3, 1880.

I come now to that portion of the machine which contains my improvement.

Just in rear of the delivery-rolls, and supported in hearings in the frame of the m achiue, is a paste-wheel, E, which is a cut-away wheel, provided with projecting paste ribs or ridges a a, of the form and dimensions corresponding to the form and dimensions of the lines of paste to be deposited on the third or final fold flap. This wheel and its companion drum F below (with which the pasteridges come in contact, or very nearly in contact) occupy such a position thatthefrontpointof the diamond fold, fed along between the delivery-rolls, may enter between them. This point is taken hold of by the rolls E F when the second fold has been formed and the blank is moving forward, at which time the cross paste'ridge a of the revolving wheel E bites the point and thus feeds the blank along. The wheel E, which continuously revolves, is of such size and is so timed in its movement that the paste-ridge a will at each revolution come around into position at the proper time to bite and carry forward the blank. Paste is supplied to the paste-ridges a a by suitable means-as, for instance, through the well-known intermediary of a paste-roller, G,

which runs in contact with a roll, H, arranged in a paste-trough, I, as indicated in the drawmgs.

Both the drum F and the wheel E are powerdriven, deriving their movement'by gearing from any suitable part of the machineas, for instance, from the rotating shaft which communicates movement to the instrumentalities which actuate the plate-knife folder or the side-folders in the Knight machine.

In order to carry along the blank I make use of an arrangement of endless carrying-tapes similar to that shown in my Letters Patent No. 222,465, dated December 9, 1879. The lower set of carrying-tapes, b, or the apron which may be used in lieu thereof, is driven from the drum F, said tapes or apron being supported by the rolls F d f, with a tensionroll, 0, to keep the same taut, while the upper set of tapes, 0, running in contact with the lower set, is supported by rolls h g (the latter a tension -roll) and bosses i on the shaft of paste-whcel E. The carrier thus formed is inclined downward between the points (I f, so that the point of the blank, as the front flap of the diamond fold reaches and passes down the inclined part, may stand up from the apron, so as to allow a folder to pass between it and the upper tapes, the points at which said upper tapes hold the blank determining the line of.

fold.

The folder in this instance consists of two fingers, K, projecting obliquely from opposite sides of the in achine-frame over the carrier and in proximity to the upper tapes, as shown. Folders of other approved construction may be used; but I prefer the arrangement shown in the drawings.

I remark that the delivery-rolls may be dis pensed with, in which case the paste-wheel E and drum I will take the place and perform the office of the delivery-rolls.

The operation of the machine is as follows: The blank delivered to the diamond and second fold forming mechanisms lies at rest on the folding table, diamond fold face uppermost, while the second fold is being formed. By the time the second fold is completed and the sidefolders have withdrawn from the blank, and the latter has been carried forward the proper distance by the delivery-rolls, the cross pasteridge to comes around to take hold of the blank 3 which is thereby pulled along between the carrying-tapes, and at the same time pasted by the paste-ridges a a. As the blank passes along and travels down the deelivity between rolls (1 f the point of the front flap stands up and so rides over the fingers K, which, as the blank is fed along, act as a folder to fold the pasted front flap back and down, as indicated in Fig. 2, the line of fold being a straight line between the points at which the front part of the blank is held by the upper carrying-tapes. The fold thus made is pressed down by passing between the end rolls, f h, and the bag thus completed is discharged from the machine.

Having described my improvement, what I claim, and desire to secure by Letters Patent, 1s

1. The combination, substantially as hereinbefore set forth, with mechanism for making the diamond and second folds, of the thirdfold paster, located beyond the second folder relatively to the direction of feed, the third folder, located beyond the paster, and the carrier for conveying the blank from the paster to the folder.

2. The combination, substantially as hereinbefore set forth, with the diamond and second fold forming mechanism, of the' rotating thirdfold paster, the carrying-tapes, or their equivalent, inclined at the front, as described, and the folding-fingers.

In testimony whereof I have hereunto set my hand this 13th day of August, 1880.

Witnesses: WILLIAM C. GROSS.

GEORGE S. LITTLEFIELD, MoNTREssoR T. ALLEN. 

